From bc63f33c441c685e5f6a8417c555aab291595fe4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?abstract=E2=81=B7?= <vitrixlabph@gmail.com>
Date: Fri, 16 Jan 2026 17:22:22 +0800
Subject: [PATCH] Create HOTEL RESERVATION APP MICROSERVICE ARCHITECTURE.md
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## SC-MVP-02: Checkpoint Definition — App Deployment & Rollout Verification

### Branch
`sc-mvp/app-deploy`

### Commit Message
Define app deployment checkpoint with idempotent rollout verification

### Snippet

**SC-MVP-02: Deploy Hotel Reservation App**

- Deploy **hotel reservation app** into `sc-mvp-test` namespace
- Ensure **idempotent deployment** (safe re-apply with no side effects)
- Use declarative manifests (Deployment, Service, optional Ingress)
- Verify successful rollout via:
  - `kubectl rollout status`
  - Pod readiness & availability checks
  - Service endpoint accessibility
- Capture deployment metadata:
  - Timestamps (apply/start/ready)
  - Pod status & restart count
  - Image digest / tag used
- Log stdout/stderr and rollout results in **CSV/JSON** (SQLite-ready ETL)
- Failure handling:
  - Automatic rollback or explicit failure state
  - Preserve logs and cluster state for audit
- Documentation includes:
  - Deployment manifests
  - Rollout verification steps
  - Re-run / idempotency validation notes

### Artifact Integrity

- **SHA256 (Original Artifact):** `<SHA256-CONTRI-PLACEHOLDER>`
- **SHA256 (Microsoft Official):** `<SHA256-MICROSOFT-PLACEHOLDER>`

### Commit Email
`vitrixlabph@gmail.com`
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 ...SERVATION APP MICROSERVICE ARCHITECTURE.md | 89 +++++++++++++++++++
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+# Super MVP — sc-mvp/app-deploy
+
+## 1️⃣ Goal
+Deploy a **hotel reservation application** onto the SC-MVP Kubernetes cluster and validate that the deployment is **idempotent, observable, and verifiably successful**, forming **Checkpoint SC-MVP-02** in the pipeline.
+
+---
+
+## 2️⃣ Requirements
+
+| Requirement | Details |
+| ----------- | ------- |
+| **Target Cluster** | Existing SC-MVP cluster (from SC-MVP-01) |
+| **Namespace** | `sc-mvp-test` |
+| **Deployment Method** | Declarative Kubernetes manifests |
+| **Idempotency** | Re-applying manifests must not cause errors or drift |
+| **Verification Tools** | kubectl |
+| **Logging Format** | CSV / JSON (SQLite ETL compatible) |
+| **Rollback Strategy** | Automatic or manual rollback on failure |
+
+---
+
+## 3️⃣ Deployment Steps
+
+### 3.1 Application Manifests
+- Kubernetes **Deployment** manifest for the hotel reservation app
+- Kubernetes **Service** manifest for internal/external access
+- Optional **Ingress** manifest (environment-dependent)
+
+---
+
+### 3.2 Apply Deployment
+- Apply manifests to the `sc-mvp-test` namespace
+- Ensure repeated `kubectl apply` operations are safe and consistent
+
+---
+
+### 3.3 Rollout Verification
+- Validate rollout completion using:
+  - `kubectl rollout status`
+  - Pod readiness and availability checks
+- Confirm service endpoint accessibility
+
+---
+
+### 3.4 Idempotency Validation
+- Re-apply manifests
+- Confirm:
+  - No unintended restarts
+  - No configuration drift
+  - Stable pod state
+
+---
+
+## 4️⃣ Logging & Verification
+- Capture stdout/stderr from deployment commands
+- Record:
+  - Deployment timestamps (apply / start / ready)
+  - Pod status and restart counts
+  - Image tag and/or digest used
+- Store logs in **CSV/JSON** format for SQLite ingestion
+- Mark checkpoint as **PASS** only if rollout completes successfully
+
+---
+
+## 5️⃣ Failure Handling & Safety
+- On failure:
+  - Trigger rollback or enter explicit failed state
+  - Preserve cluster state and logs for audit
+- Do not auto-delete resources unless explicitly configured
+
+---
+
+## 6️⃣ Deliverables
+- Application deployment manifests
+- Rollout verification logs (CSV/JSON)
+- Idempotency validation evidence
+- Documentation describing:
+  - Deployment procedure
+  - Verification steps
+  - Re-run behavior and constraints
+
+---
+
+## Checkpoint Summary
+
+**Checkpoint ID:** SC-MVP-02  
+**Branch:** `sc-mvp/app-deploy`  
+**Purpose:** App Deployment & Rollout Verification  
+**Status:** ☐ PASS / ☐ FAIL (to be recorded during execution)